Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68f2d3fa594f858…

MALICIOUS

PDF

47.7 KB Created: 2020-08-25 03:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e95d31aec9fb698329f41a8327d42c75 SHA-1: 642cf38d559da71609d827219d7a7f1dd7e0ecea SHA-256: d68f2d3fa594f8586f06710db9cedf3b5317db789119da34443129cf429462e7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as an educational worksheet. The document body and embedded URLs suggest a lure to download further malicious content. The ML classifier strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=body+parts+of+animals+worksheet+for+kindergarten
    • http://files.14centsaminute.com/uploads/1/3/0/8/130813458/9687d.pdf
    • http://depumitol.strazzanti-photography.com/uploads/1/3/0/8/130814124/4a6e995eb0d.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4682/files/marawebenelumaxozupubez.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/47388074841.pdf
    • https://cdn.shopify.com/s/files/1/0433/4996/6998/files/befazizedavediv.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/calendario_escolar_2020_20_sep_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/60195025221.pdf
    • https://cdn.shopify.com/s/files/1/0436/9632/4758/files/77566643550.pdf
    • https://cdn.shopify.com/s/files/1/0430/8513/6021/files/pejeziko.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6315/files/file_manager_old_version_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6791/files/wogelafarubepodoseva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72707516801.pdf
    • https://cdn.shopify.com/s/files/1/0463/2487/5425/files/zezidoxumerolopojan.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c39.bin
5173f8d3c4af7c50f54dea8e0ed3611f0a3157f91ba130644f80af7a481a0dc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C39 5760 bytes
font_01_sfnt_off00008fc9.bin
d4f32b2e173c2b1f975a72a4c0e544f1ac842d4623ae09571c4884bddd546368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC9 10112 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.